Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
Retrospective Evaluation of Cured-in-Place Pipe - (NEPIS)(EPA ...
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Table 4-18. Flexural Test Results for Denver 48-<strong>in</strong>. Upstream Samples (Set 2)<br />
Location on<br />
<strong>Pipe</strong><br />
Peak Load<br />
(lb)<br />
Peak Bend<strong>in</strong>g<br />
Stress<br />
(psi)<br />
55<br />
Peak Shear<br />
Stress<br />
(psi)<br />
Flexural<br />
Modulus<br />
(psi)<br />
1 139 5,012 476 276,920<br />
2 156 6,027 559 187,218<br />
3 149 7,486 589 369,998<br />
4 162 6,159 541 270,265<br />
5 167 5,900 540 214,134<br />
Average and<br />
Std. Dev.<br />
- 6,117±888 541±41 263,707±70,398<br />
Figure 4-36. Flexural Stress-Stra<strong>in</strong> Curves for Denver 48-<strong>in</strong>. Upstream L<strong>in</strong>er (Set 2)<br />
4.3.8 Tensile Test<strong>in</strong>g<br />
4.3.8.1 Downstream Sample. Specimens were cut from the retrieved downstream CIPP l<strong>in</strong>er sample<br />
<strong>in</strong> accordance with ASTM D638 (see Figure 4-37) for measur<strong>in</strong>g the l<strong>in</strong>er’s tensile strength. A total <strong>of</strong><br />
five specimens were prepared and tested. The results <strong>of</strong> test<strong>in</strong>g are shown <strong>in</strong> Table 4-19.<br />
Us<strong>in</strong>g the <strong>in</strong>formation given <strong>in</strong> Table 4-19, the stress-stra<strong>in</strong> curves for all samples were drawn, as shown<br />
<strong>in</strong> Figure 4-38.